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Digitally-Intensive Fast Frequency Modulators for FMCW Radars in CMOS : (Invited Paper)

机译:用于CMOS中FMCW雷达的数字密集型快速频率调制器:(邀请论文)

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Digitally-intensive PLLs have already demonstrated their effectiveness as frequency synthesizers for cellular applications, being able to fulfill the specifications in terms of phase noise, spurs and power dissipation thanks to the adoption of embedded digital processing that efficiently reduces the analog impairments. In this paper we review how these techniques further enable other capabilities, namely both wideband and linear frequency modulation. The application considered as a case study is the fast chirp generation for frequency-modulated continuous wave radar at millimeter waves. We illustrate how the combination of the two-point modulation of a digital PLL and the background digital pre-distortion of the DCO enable both fast and linear modulation.
机译:数字密集型PLL已经证明了其作为蜂窝应用频率合成器的有效性,由于采用了嵌入式数字处理技术,能够有效地减少模拟损伤,因此能够满足相位噪声,杂散和功耗方面的规范。在本文中,我们回顾了这些技术如何进一步实现其他功能,即宽带和线性频率调制。被视为案例研究的应用是毫米波调频连续波雷达的快速chi声生成。我们说明了数字PLL的两点调制和DCO的背景数字预失真的组合如何实现快速和线性调制。

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